Electronic Musical Instrument

This is a prototype of my electronic musical instrument. It uses touch sensors for buttons, can simulate different instruments: saxophone, flute, drums, trumped, steel drums.
Basically it's a programmable controller which can be whatever you want it to be. 18 touch sensors, a touchscreen, MIDI sinthesyzer, Bluetooth.
The total cost of parts is about $15, not including the case, which is just 2 printed circuit boards.